By Blair Schodowski and James O. Farmer,
Scientific-Atlanta, Inc.

The NCTA and the cities have
recently agreed to, among other things, a set
of basic measurements to be made on video
signals. We'll show you how to make the
new measurements, and tell you what they
mean. We'll also discuss other basic
measurements that should be made in order
to provide good signals. The measurement
emphasis is on practical things that can be
done in the headend, using available
equipment augmented with devices that can
be built in the system. In looking at various
cable systems, we have collected some prime
examples of what good video does NOT
look like. Baseband video and modulation
are reviewed.